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  • 網站首頁 ? 商品詳情 ? 英國AUDIO AD255/AD245 便攜式調音臺/同期錄音調音臺Audio developmen

    英國AUDIO AD255/AD245 便攜式調音臺/同期錄音調音臺Audio developmen
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    市場價: 74820.00
    本店價: 62350.00
    商品編號:M006625
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    商品描述

    AD255 is the latest addition to the Audio Developments Ltd range of portable mixers, having comprehensive facilities set out in an ergonomically friendly design and all contained within a robust and rugged aluminium case with a relatively small footprint.

    商品參數
    • 品牌:Audio Developments
    • 產地:英國
    • 上市時間:2018

    英國AUDIO AD255 便攜式調音臺/同期錄音調音臺


    Audio Developments AD255(6入2出混音臺,帶VU表以及2Aux輸出)

    詳情說明

    AD255 Mixer

    AD255 Mixer

    AD255 is the latest addition to the Audio Developments Ltd range of portable mixers, having comprehensive facilities set out in an ergonomically friendly design and all contained within a robust and rugged aluminium case with a relatively small footprint.


    The features and specification are based on the well established AD245 Pico Mixer. Two auxiliary sends and channel direct outputs are the main additional features. As with the other models within the range, professional components are used throughout - including Penny and Giles 100mm long-stroke, conductive plastics faders.


    Location sound professionals now require multi-track record facilities, the channel direct outputs provide the necessary features; without compromising the simplicity of operation and reliability of its counterpart the AD245.

    Features

    Low noise microphone amplifier developed for AD140 series of mixers. Power is provided for 48V Phantom and 12V Tonader microphones


    A simple but effective three band equaliser, proved and approved under field conditions, in use throughout the AD140 series of mixers


    Inputs are transformer balanced and protected against radio-frequency interference. A high-pass filter protects against low-frequency saturation.


    The main stereo output is transformer balanced and has separate left and right faders

    .

    Two auxiliary outputs are transformer balanced and have separate master rotary controls. Auxiliary 1 & 2 are routed from each input using a 3 position switch (off, pre and post fader). Auxiliary 2 has a rotary level control


    Limiters, which may be linked for stereo operation, are incorporated in the main output. Limiting is indicated by a pair of LEDs .


    Direct outputs are unbalanced and driven from a very low impedance source with high drive capability.


    Two LCD meters display - either PPM or VU - monitor the main output, auxiliary output and PFL of each input. Useful for monitoring level at a direct output. Battery level and monitor status (Direct or Return) are also indicated. Meters can be illuminated.


    The frequency of the internal oscillator can be selected between 1KHz and 10KHz, it's output replacing the signal on the main output.


    Via an internal microphone, the mixer operator is able to communicate with the main output (SLATE) and with an outstation (EXT) . The outstation normally receives a mono of the mixers main output.


    The headphone monitor may be switched between main output, auxiliary outputs and return. All have PFL override. Monitor selectors allow left , right, left + right, auxiliary 1, auxiliary 2 and auxiliary 1 + 2 to be routed to the headphone socket. An M-S matrix amplifier may be inserted in order to decode main or auxiliary outputs in the M-S domain.


    An electronically balanced stereo tape return appears on a pair of stereo jack sockets. An input calibration potentiometer is adjacent to the jack sockets on the connector panel.


    All input and output connectors are presented on one surface of the case and in line with their corresponding modules.


    The mixer receives power from 8 x C cells fitted internally or from an external 12V - 15V DC source.

    Specification

    REFERENCE 0dB=775mV at 1kHz unless otherwise stated.


    MAX GAIN MIC 80dB

    LINE 50dB


    MAX INPUT LEVEL MIC @ MAX GAIN -44dB @ MIN GAIN + 0dB

    LINE @ MAX GAIN -14dB @ MIN GAIN+20dB

    STEREO-RETURN +18dB

    TB RETURN +18dB


    INPUT IMPEDANCE MIC >2k5R

    LINE >6k5R

    STEREO-RETURN >100kR

    TB RETURN >20kR


    MIC POWERING 48V PHANTOM & 12V TONADER


    MAX OUTPUT +23dBm L-R, AUX & MONO

    (600R LOAD) TRANSFORMER BAL

    +18dBm DIRECT OUT, H'PHONE & EXT 1

    (600R LOAD) UNBALANCED


    OUTPUT IMPEDANCE <60R L-R, AUX & MONO

    <20R DIRECT OUT, MONITOR & EXT 1


    FREQUENCY 0: -1dB L-R, AUX & MONO & DIRECT OUT

    RESPONSE 0: -1.5dB MONITOR PATHS


    HARMONIC <0.05% @ 1kHz @ 0dBm OUTPUT

    DISTORTION <0.15% @ 40Hz to 15kHz @ +15dBm OUTPUT


    OVERLOAD ILLUMINATES @ +15dBu at the PRE-FADER INDICATOR


    CROSSTALK <-70dB 40Hz to 15kHz

    INTERGROUP & INTERCHANNEL


    NOISE MIC <-126dB EIN 20Hz to 20kHz; 200R SOURCE


    LINE <77dB SNR 20Hz to 20kHz 0dBu IN & OUT


    EQUALISATION HF: 110dB @ 10kHz

    LF: 110dB @ 100Hz


    MF: 115dB

    CENTRE FREQUENCY 2k5Hz Q=1.2


    HPF: PRE-TRANSFORMER 12dB/OCTAVE

    -3dB @ 150Hz

    -3dB @ 90Hz


    OUTPUT LIMITER THRESHOLD +8dB

    RATIO 7:1

    ATTACK 2 SETTINGS

    INTERNALLY SWITCHABLE

    1: 4mS 2: 0.8mS

    RELEASE 2 SETTINGS

    INTERNALLY SWITCHABLE

    1: 250mS 2: 80mS

    FACTORY SETTING: SLOW


    CURRENT 240mA (6 INPUT)

    CONSUMPTION 12V DC SUPPLY


    Mic/line Module

    Mic/line Module

    Output Module

    Output Module

    Connector Panel

    Connector Panel

    Block Diagram




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